Cleaning sponge



FIG. 1 is a perspective view a cleaning sponge in accordance with my design;

FIG. 2 is a top view thereof. The bottom of the cleaning sponge is a mirror image of the top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof. 

CLAIM The ornamental design for cleaning sponge, as shown and described. 